DEC MS630/M7609 Question

[Lyle Bickley]

On Tue, 9 Jul 2019 23:43:17 +0000
W2HX <w2hx at w2hx.com> wrote:

> Thanks, Lyle. I was reading this. I guess its wrong?
> 
> https://en.wikipedia.org/wiki/MicroVAX
> 
> The MS630 memory expansion module was used for expanding memory capacity.
> Four variants of the MS630 existed: the 1 MB MS630-AA, 2 MB MS630-BA, 4 MB
> MS630-BB and the 16MB MS630-CA. 

The use of suffix's to identify the amount of memory was common with DEC - and
the line I copied only referenced the "AA" version of the MS630.

> Wouldn't be the first time wikipedia was wrong...

Their probably right (in this case ;)

Lyle
______________________________________
> From: Lyle Bickley <lbickley at bickleywest.com>
> Sent: Tuesday, July 9, 2019 6:08 PM
> To: cctech at classiccmp.org
> Cc: W2HX
> Subject: Re: DEC MS630/M7609 Question
> 
> On Tue, 9 Jul 2019 21:11:39 +0000
> W2HX via cctech <cctech at classiccmp.org> wrote:
> 
> > Hi there.
> >
> >
> > I just acquired a board with the number M7609. It was advertised as an
> > M630-CA which my research tells me is supposed to be 16MB. How do I tell on
> > the board if this is 8MB or 16MB? There does not seem to be a suffix on the
> > board that I can see.
> >
> >
> > What to look for?  
> 
> M7609-AA    MS630-CA    Q   8-Mbyte parity 36-bit RAM for KA630 (MicroVAX II)
> 
> Lyle
> --
> 73   NM6Y
> Bickley Consulting West Inc.
> https://bickleywest.com
> 
> "Black holes are where God is dividing by zero"



-- 
73   NM6Y
Bickley Consulting West Inc.
https://bickleywest.com

"Black holes are where God is dividing by zero"